#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
int main(int argc,char* argv[],char* envp[])
{
if(strcmp(argv[1],"-a")==0)
{
printf("This is a part of open the computer!\n");
}
else if(strcmp(argv[1],"-b")==0)
{
printf("This is a part of close the computer!\n");

}
else
{
  printf("It is only support -a -b,please re-enter\n");
}

  return  0;
}
